5 
Phillips and Praeger — The Ferns of Ulster. 
Asplenium lanceolatum being the only Irish Fern which does not occur in the 
district.* Of these 32 species, five may be accounted extremely rare, having 
been found in only one or two localities in the district ; these are : — 
Polypodium Dryopteris. 
Lastrea spinulosa. 
Adiantum Capillus- Veneris. 
Trichomanes radicane. 
Ophioylossum lusitanicum. 
Five others may be called very rare, occurring as they do very sparingly in 
the province: — 
Allosorus crispus. 
Polystichum Lonchitis . 
Lastrea Thelypteris. 
Asplenium viride. 
Hymenophyllum Tunbridgense. 
Six more come under the head not common : — 
Polypodium Phegopteris. 
Lastrea Oreopteris. 
Cystopteris fragilis. 
Hymenophyllum Wilsoni. 
Osmunda regalis. 
Botrychium Lunar ia. 
Five under the head rather common : — 
Lastrea cemula. 
Polystichum aculeatum. 
Ceterach officinarum. 
Asplenium marinum. 
Ophioylossum vulgatum. 
And finally, eleven under the head common, being plentifully distributed 
through the district : — 
Polypodium vulgare. 
Lastrea Filix-mas. 
dilatata . 
Polystichum angulare. 
Athyrium Filix-fcemina. 
Asplenium Adiantum-nigrum. 
Trichomanes. 
Ruta-muraria. 
Scolopendrium vulgare. 
Blechnum spicant. 
Pteris aquilina. 
* It is confined to counties Cork and Kerry. 
